<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <h2>{{title}}</h2>
        <h2 :style="{color:color}" :title="title" id="big">{{title}}</h2>
        <h2>{{count}}</h2>
    </div>

    <script src="vue-2.5.21.js"></script>
    <script src="index.js"></script>
</body>

</html>